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    <title>第 09 题</title>
    <script type="text/javascript">
        /*
            09、将数组用 | 或其他符号连接成一个字符串。
        */
        var oArr = ["第九题", 1, 2, 3, 4, 5, 6, 7, 8, 9];
        var oStr = oArr.join("+");
        console.log(oStr);
    </script>
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